The Flex Ring Toner® is an updated version of Joseph Pilates' Magic Circle. Completely encased in a non-slip rubberized coating, the Flex Ring Toner is soft and comfortable to use. A slender handle design makes the overall width slightly narrower than other Circle products, so it fits more body types while maintaining similar deflection and resistance. Portable, the Flex Ring Toner easily packs into a suitcase so you can take your circle workout with you wherever you go. Resistance is between a 3-band and 4-band Spring Circle (see below.) 14.5 (37cm) outside diameter. 3.2 lbs (1.5 kg).